Best weapons in gaming

MyGaming - Most shooting games have their standard fare shotguns, machine-guns and pistols. Those are all cool and always get the job done, but then there are some guns and weapons that stand out from the crowd, including paranormal Nazi technology, sci-fi nano-bot blasters, and some more inconspicuous objects of mass destruction.

What's a "best weapons" list without one of the most OP guns in FPS history, the Farsight from Perfect Dark. One-shot kill, through walls from anywhere on the map with an automatic target tracking assist.